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The purpose of this study is to determine the safety and efficacy of TLK199 Tablets in patients with Myelodysplastic Syndrome (MDS)
This Phase 1-2a study is an open label, dose-ranging study of TLK199 Tablets in patients with all World Health Organization or French-American-British classification types of myelodysplastic syndrome (MDS). In Phase 1, the safety, pharmacokinetics, and hematologic response rate with TLK199 Tablets will be evaluated. The Phase 1 dose-ranging stage is designed to determine the maximum tolerated dose or optimal biologic dose of TLK199 Tablets. Evaluation of the pharmacokinetics of TLK199 Tablets will be conducted. In Phase 1, an additional 12 patients will undergo pharmacokinetic evaluation under fed conditions at the selected Phase 2a dose. In Phase 2a, further safety and hematologic responses by the modified International Working Group MDS response criteria will be studied.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 | Experimental | Dose Escalation Study of TLK199 Tablets From 200 mg Per day To 6000 mg Per Day |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Ezatiostat Hydrochlorine | Drug | Oral Tablets in 2 Divided Doses, Dose Escalation From 200 mg Per Day to 6000 mg Per Day on Days 1-7 of each 21 Day Cycle. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Maximum Tolerated Dose or Optimal Biologic Dose | 6 months |
| Measure | Description | Time Frame |
|---|---|---|
| Safety Pharmacokinetic Parameters, Hematologic Response Parameters | 6 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Gail Brown, MD | Telik | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Loyola University Chicago-Cardinal Bernardin Cancer Center | Maywood | Illinois | 60153 | United States | ||
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 19398716 | Derived | Raza A, Galili N, Smith S, Godwin J, Lancet J, Melchert M, Jones M, Keck JG, Meng L, Brown GL, List A. Phase 1 multicenter dose-escalation study of ezatiostat hydrochloride (TLK199 tablets), a novel glutathione analog prodrug, in patients with myelodysplastic syndrome. Blood. 2009 Jun 25;113(26):6533-40. doi: 10.1182/blood-2009-01-176032. Epub 2009 Apr 27. |
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| ID | Term |
|---|---|
| D009190 | Myelodysplastic Syndromes |
| ID | Term |
|---|---|
| D001855 | Bone Marrow Diseases |
| D006402 | Hematologic Diseases |
| D006425 | Hemic and Lymphatic Diseases |
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| ID | Term |
|---|---|
| C096329 | gamma-Glu-S-BzCys-PhGly diethyl ester |
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| Loyola University Medical Center |
| Maywood |
| Illinois |
| 60153 |
| United States |
| University of Massachusetts (UMass) Memorial Medical Center | Worcester | Massachusetts | 01655 | United States |